<script setup lang="ts">
import { createRoleUserAPI, getRoleDetailAPI, getTreeListAPI, updateRoleAPI } from '@/apis/system';
import type { RoleData, RoleParams } from '@/types/system';
import { ElMessage, type ElTree } from 'element-plus';
import { computed, onMounted } from 'vue';
import { ref } from 'vue';
import { useRoute, useRouter } from 'vue-router';
const roleForm = ref<{
  roleName: string
  remark: string
  perms: Object[]
  roleId?: string
}>({
  roleName: '',
  remark: '',
   // 选中的权限
  perms: []
})
const roleRules = ref({
  roleName: [
    { required: true, message: '请输入角色名称', trigger: 'blur' }
  ]
})
const roleFormRef = ref()
const activeStep = ref(0)
const decreseStep = () => {
  if (activeStep.value === 0) return
  activeStep.value--
}
const treeRef = ref<InstanceType<typeof ElTree>[]>()
const diabledTreeRef = ref<InstanceType<typeof ElTree>[]>()
const increseStep = () => {
  if (activeStep.value === 2) return
  if (activeStep.value === 0) {
    roleFormRef.value.validate((valid: boolean) => {
      if (valid) {
        // 校验通过才能进入下一个状态
        activeStep.value++
      }
    })
  } else if (activeStep.value === 1) {
    // 当前是权限信息状态（每次默认重置为空，避免上一步返回数据累加）
    roleForm.value.perms = []
    treeRef.value!.forEach((tree: InstanceType<typeof ElTree>) => {
      roleForm.value.perms.push(tree.getCheckedKeys())
    })
    // 如果长度为零 没有选中任何东西（flat 扁平化数组）
    if (roleForm.value.perms.flat().length === 0) {
      ElMessage({
        type: 'error',
        message: '请至少选择一个权限点'
      })
    } else {
      // 进入到下一页
      activeStep.value++
      // 回填已选择数据
      diabledTreeRef.value!.forEach((tree, index) => {
        // eslint-disable-next-line @typescript-eslint/ban-ts-comment
        //@ts-ignore  
        tree.setCheckedKeys(roleForm.value.perms[index])
      })
    }
  }

}
const treeList = ref<RoleData[]>([])
// 获取功能权限列表
const getTreeList = async () => {
  const res = await getTreeListAPI()
  treeList.value = res.data
}
getTreeList()

// 确认添加
const router = useRouter()
const confirmAdd = async () => {
  // 编辑
  if (roldId.value) {
    await updateRoleAPI(roleForm.value as RoleParams)
  } else {
    // 添加
    await createRoleUserAPI(
      roleForm.value as RoleParams
    )
  }
  ElMessage({
    type: 'success',
    message: `${roldId.value ? '编辑' : '新增'}角色成功`
  })
  router.back()
}

// 0. 编辑缓存roleId
const route = useRoute()
const roldId = computed(() => {
  return route.query.id as string
})
onMounted(() => {
  // 如果有id，就是编辑角色
  if (roldId.value) {
    editRoleDetail()
  }
})

const editRoleDetail = async () => {
  const res = await getRoleDetailAPI(Number(roldId.value))
  const { perms, remark, roleId, roleName } = res.data
  // 回填基础表单
  roleForm.value = { perms, remark, roleId, roleName }
  // 回填Tree
  treeRef.value!.forEach((tree, index) => {
    // eslint-disable-next-line @typescript-eslint/ban-ts-comment
    //@ts-expect-error
    tree.setCheckedKeys(roleForm.value.perms[index])
  })
}

</script>

<template>
  <div class="add-role">
    <header class="add-header">
      <el-page-header content="添加角色" @back="$router.back()" />
    </header>
    <main class="add-main">
      <div class="step-container">
        <el-steps direction="vertical" :active="activeStep">
          <el-step title="角色信息" />
          <el-step title="权限信息" />
          <el-step title="检查并完成" />
        </el-steps>
      </div>
      <div class="form-container" v-show="activeStep === 0">
        <div class="title">角色信息</div>
        <div class="form">
          <el-form ref="roleFormRef" class="form-box" :model="roleForm" :rules="roleRules">
            <el-form-item label="角色名称" prop="roleName">
              <el-input v-model="roleForm.roleName" />
            </el-form-item>
            <el-form-item label="角色描述">
              <el-input v-model="roleForm.remark" />
            </el-form-item>
          </el-form>
        </div>
      </div>
      <div class="form-container" v-show="activeStep === 1">
        <div class="title">权限配置</div>
        <div class="form">
          <div class="tree-wrapper">
            <div v-for="item in treeList" :key="item.id" class="tree-item">
              <div class="tree-title">{{ item.title }}</div>
              <el-tree ref="treeRef" :data="item.children" show-checkbox default-expand-all node-key="id"
                highlight-current :props="{ label: 'title'}" />
            </div>
          </div>
        </div>
      </div>
      <div class="form-container" v-show="activeStep === 2">
        <div class="title">检查并完成</div>
        <div class="form">
          <div class="info">
            <div class="form-item">角色名称：{{ roleForm.roleName }}</div>
            <div class="form-item">角色描述：{{ roleForm.remark }}</div>
            <div class="form-item">角色权限：</div>
            <div class="tree-wrapper">
              <div v-for="item in treeList" :key="item.id" class="tree-item">
                <div class="tree-title">{{ item.title }}</div>
                <el-tree ref="diabledTreeRef" :data="item.children" show-checkbox default-expand-all node-key="id"
                  :highlight-current="false" :props="{ label: 'title' ,disabled:()=> true}" />
              </div>
            </div>
          </div>
        </div>
      </div>
    </main>
    <footer class="add-footer">
      <div class="btn-container">
        <el-button v-if="activeStep > 0" @click="decreseStep">上一步</el-button>
        <el-button v-if="activeStep < 2" @click="increseStep" type="primary">下一步</el-button>
        <el-button v-if="activeStep === 2" type="primary" @click="confirmAdd">{{
          roldId ? '确认修改' : '确认添加'}}</el-button>
      </div>
    </footer>
  </div>
</template>


<style scoped lang="scss">
.add-role {
  background-color: #f4f6f8;
  height: 100vh;

  .add-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    height: 64px;
    line-height: 64px;
    font-size: 16px;
    font-weight: bold;
    background-color: #fff;

    .left {
      span {
        margin-right: 4px;
      }

      .arrow {
        cursor: pointer;
      }
    }

    .right {
      text-align: right;
    }
  }

  .add-main {
    position: fixed;
    top: 64px;
    bottom: 88px;
    width: 100%;
    overflow-y: auto;
    background: #f4f6f8;
    padding: 20px 30px;
    display: flex;

    .step-container {
      height: 400px;
      width: 200px;
    }

    .form-container {
      flex: 1;
      background-color: #fff;
      overflow-y: auto;

      .title {
        height: 60px;
        line-height: 60px;
        padding-left: 20px;
      }

      .form {
        margin-bottom: 20px;
        padding: 20px 65px 24px;

        .el-form {
          display: flex;
          flex-wrap: wrap;
        }

        .info {
          font-size: 14px;
          color: #666;

          .form-item {
            margin-bottom: 20px;
          }
        }
      }

      .form-box {
        width: 600px;
        display: flex;
        flex-direction: column;
      }
    }
  }

  .add-footer {
    position: fixed;
    bottom: 0;
    width: 100%;
    padding: 24px 50px;
    color: #000000d9;
    font-size: 14px;
    background: #fff;
    text-align: center;
    z-index: 10001;
  }

  .tree-wrapper {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;

    .tree-item {
      flex: 1;
      padding: 0px 4px;
      text-align: center;

      .tree-title {
        background: #f5f7fa;
        text-align: center;
        padding: 10px 0;
        margin-bottom: 12px;
      }
    }
  }
}
</style>